Malicious PDF — malware analysis report

Static analysis result for SHA-256 930d72d18ee2590d…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 02:33:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4515cb5e9acd6c7be3d5d7ae26dbd732 SHA-1: c4e79e05cac07e406cca6e2d7f927bbe2404223d SHA-256: 930d72d18ee2590dde04ca0022e52c6f631d35edb854551f186f023260d352b6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/download-rc7-roblox-hack-game-hack PDF link annotation
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/get-clothes-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/how-to-hack-money-on-muder-mystery-2-roblox_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/hack-for-ninja-legends-roblox-download_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/roblox-hack-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/cute-drawings-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/upgrade-to-roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/neptunian-v-hacking-roblox_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-roblox-templates-twitter_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/roblox-money-cheat-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3117 21692 bytes
SHA-256: ed403bbe3ba0bebb7e4e237b06aaf516c51e69b68b245986366029cef8119183
font_01_sfnt_off00006107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 19220 bytes
SHA-256: 1c5365d70794ee26e97390ee7a666c9eccd4a6ef78d15859b509b47bae3e186d

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